This file is byte-identical to the first copy the registry indexed, one of 15 indexed copies. Same content hash, so the same checks give both the same grade.
codebase-design from dcouple/pane is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find deepening opportunities, decide where a seam goes, make code more testable or AI-navigable, or when another skill needs the deep-module vocabulary.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Codebase Design
Design **deep modules**: a lot of behaviour behind a small interface, placed at a clean seam, testable through that interface. Use this language and these principles wherever code is being designed or restructured. The aim is leverage for callers, locality for maintainers, and testability for everyone.
## Glossary
Use these terms exactly: don't substitute "component," "service," "API," or "boundary." Consistent language is the whole point.
**Module**: anything with an interface and an implementation. Deliberately scale-agnostic: a function, class, package, or tier-spanning slice. _Avoid_: unit, component, service.
**Interface**: everything a caller must know to use the module correctly: the type signature, but also invariants, ordering constraints, error modes, required configuration, and performance characteristics. _Avoid_: API, signature (too narrow, they refer only to the type-level surface).
…
The line at the top of this page pins the label git:20260924.17234b5, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
pass: Frontmatter block present
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pass: Frontmatter declares a description
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pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
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pass: No prompt-injection phrasing
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pass: No recursive delete of root, home or parent
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Source
GitHub
dcouple/pane · 603 stars · license a license file GitHub does not identify · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_o6joztwakwyi7skz
GET https://markdownregistry.com/api/v1/resolve?ref=dcouple/pane/codebase-design
GET https://markdownregistry.com/api/v1/blob/2c20617f87ec8af6a434859f381b2f061a69b530444e74eb39e78bb016a6d1e2
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
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dcouple/pane · main/src/services/paneChatBundle/skills/brief/SKILL.md · Use when a problem, idea, or change of intent is worth capturing as a long-form page, or the person asks to write it…
dcouple/pane · main/src/services/paneChatBundle/skills/bug-intake/SKILL.md · Use when the person reports broken behaviour or starts a session to file a bug. Reproduces and reports. Never fixes.
dcouple/pane · main/src/services/paneChatBundle/skills/cold-read/SKILL.md · Give a fresh agent something to walk through with zero context - a PR body, a landing page, a document, a process…
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dcouple/pane · main/src/services/paneChatBundle/skills/discussion/SKILL.md · Have an interactive discussion about a topic, approach, feature, or bug without making code changes. Researches the…
dcouple/pane · main/src/services/paneChatBundle/skills/eli5/SKILL.md · Teach an unfamiliar topic from first principles with a picture-first HTML explanation, published to the workspace's…
dcouple/pane · main/src/services/paneChatBundle/skills/excalidraw-pr-diagrams/SKILL.md · Draw Excalidraw diagrams that make a visual argument, such as a pull request's before/after visual overview, an…
dcouple/pane · main/src/services/paneChatBundle/skills/explain-visually/SKILL.md · Complement an answer or discussion with a first-principles visual HTML explanation, published to the workspace's…
librechat-ai/librechat · .claude/skills/codebase-design/SKILL.md · Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find…
danny-avila/librechat · .claude/skills/codebase-design/SKILL.md · Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find…
greenfield-inc/pane · main/src/services/paneChatBundle/skills/codebase-design/SKILL.md · Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find…
kunolu/640-skills · sbtd-workflow-onboard/assets/external-skills/stable/skills/codebase-design/SKILL.md · Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find…
mxyhi/ok-skills · codebase-design/SKILL.md · Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find…
asymmetric-al/core · .agents/skills/codebase-design/SKILL.md · Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find…
oyadotai/oya-browser · .claude/skills/codebase-design/SKILL.md · This skill should be used when designing a module interface, reducing coupling, choosing dependency seams, improving…
